I would advise you to save your points, save up some money and buy a high quality vibrator. In my experience, you do get what you pay for. I bought a cheap vibrator for my first one and it was awful and put me off vibrators for 9 years. It wasn't until recently that I discovered the one I had was just cheap and poor quality and that was what had given me such a poor experience. I've heard a lot of really good things about the Evolved toys as good quality and budget friendly. I believe I've also heard the same about SinFive and FunFactory. Personally, I just save up until I can buy the more expensive ones because I want to be sure I'll like them. The search tools here are really awesome, you can limit by material, function, vibration power (vroom) and noise (bees), price and many other features to get items that match what you're looking for. If I've done this right, this
should be a search query for traditional silicone vibrators under $40. You could further narrow the search parameters to your specifics. I highly, highly recommend going with silicone. If you're absolutely dead set on reducing price, maybe include plastic, though keep in mind that it's a hard material, not flexible like silicone. I personally steer well clear of anything below a 7 on Eden's safety scale. Also, think about what you want the vibrator for, whether clitoral, penetration, thrusting, g-spotting. Personally, I don't like the plain, straight vibrators. I find them uninteresting, boring and utterly unappealing. Some people love em, but I need a curve or a shape or something to my internal toys. On the other hand, if you're looking for something that's not for penetration, you could do a search for clitoral vibes, massagers, or discreet vibes. Some provide very direct, pin-point stimulation while others provide more broad, indirect sensations. All a matter of personal preference. Another point to keep in mind is that vibrators vibrate at different frequencies producing different quality to the sensation. Some have high, buzzy, surface vibrations while others have deep, rumbly, low vibrations. This is also entirely a matter of personal preference as there are people who prefer both and everything in between. Unfortunately, this is something Eden can't really quantify to make it searchable, but in reading the reviews you'll be able to get an idea of the toy's quality of vibrations.
Questions I recommend considering:
1. What types of sensations do you enjoy as part of your sex or masturbating. Internally, do you like thrusting, angle, deep, shallow, filling, stretching. Clitorally, do you like direct pressure, broad pressure, firm, light, etc. Thinking about this and looking at the toys will give you a better idea of what style or type of toy you'll enjoy the most.
2. What part of your body do you plan on stimulating with the toy? Vaginal (internal), vulva, clitoris, nipples, anal other erogenous zones. (Note: if planning to use it for anal and vaginal play, the ability to sterilize it is KEY, stick with glass, silicone and metal, ideally)
3. For internal toys, what length and girth are you comfortable with/will you enjoy? Eden's search functions allow you to narrow searches by length, diameter and circumference.
4. What kind of power supply do you want to deal with? Rechargeable toys are pricey, but batteries get expensive after a while. There's also some that have to be plugged in. If using toys with replaceable batteries, read reviews to find out how long the toy lasts on a set of batteries, how many batteries, etc. Same goes for finding out about length of charge on rechargeables as well as details such as length of cord, etc.
5. Where do you plan to use the toy? Will other people be nearby (ie: in the other room, etc.)? Will you care if they hear the noise a vibrator makes? Some are nearly silent while others are VERY noisy. Will the noise of the vibrator bother you? Some people get easily distracted by the noise. Also consider whether you want it to be portable and travel friendly.
6. In the same vein, are others you live with likely to find your toy and do you care if they do? If so, you might want to look at discreet toys that don't really look like sex toys. Some are very clever or very well disguised. Also consider storage. Some toys come with a pouch or Eden sells them, as well as other storage solutions.
7. What type of lube will you be using, if any? Silicone does tend to dry up a lot of women's natural moisture so lube is often an important consideration. Silicone toys can only be paired with water-based and some oil based lubes. Silicone lubricants will harm them. If you use condoms in your sex life, avoid oil-based as these will degrade latex condoms.
8. Do you plan on using your toy with a partner? This is a consideration for ergonomics. If using it during intercourse, the size, shape, etc may affect your ability to use it. Also, if using it with a partner, it's even more important to use a safe material so that bacteria and things don't get transmitted. This is an even greater consideration if you may be planning to share it with your partner in any way. Many people use condoms or toy covers to prevent contamination between partners if this is a concern.
I'm sure I've addressed a lot that you're not even concerned with but I wanted to be as thorough as possible. You know your body better than anyone so think about what you'll enjoy, narrow down the search parameters, pick out a few that you like the look of and read some reviews. Some of it will be trial and error and you may not end up absolutely loving your first toy but doing some research will help make sure it's at least a good experience. And don't give up if the first toy you get doesn't work for you because there are thousands of thousands of toys with different shapes and sizes and quality of vibrations and materials and many other variables.
Also, here's a link to Eden's Vibrator Buyer's Guide