That candle only has a burn time of 12 hours so that's not really much at all. The Shunga Massage Candle has a burn time of 45 hours which you can find here: link The Dona candle is an inexpensive choice and has an estimated burn time of 30 hours: link
If you do a search for "candle", you'll be met with 2 pages of products. If you click on a product, most of the product pages have the estimated burn time listed on them.
I'm not sure if you are looking for a "bigger" candle just for the appearance or if you want it to last longer but if you want it to last longer, I recommend the products I linked you to above.