My Man gave me a lot of input when I first started using toys. He bought most of them. But, as I learned more about safe materials, good brands, sizes I like and things that will work for me, I tend to buy what I need and we use them together.
Don't force him to be part of the decision making process if he is not interested in doing it. My Man and I do very little of any type of shopping together, we usually even grocery shop alone! As long as he's into your using them, I'd be happy with that.
He may just not feel that he knows what you will like, so if he has no interest in helping you pick, forcing the issue is only going to cause problems.