It's always a good idea to have a mix of price points. In marketing, there have been studies that show that approximately 25% or so of the people prefer buying more expensive items, the deluxe versions, the upgraded version, etc. Look at car manufacturers. They have a mix of available models for every car they make. You can get the base model, a mid level model, a luxury model with all the bells & whistles, etc. Not everyone is poor, the more affluent like to spend more so you need to have some higher priced items for that demographic.
That being said, our most expensive individual item currently is $12. BUT, what we do to make higher price points is to put together gift sets of a bar of soap, jar of sugar scrub, jar of body butter, gift bag and a shower poofie thing. That satisfies the people that want to spend more and/or get something they can give as a gift. Our most expensive gift bag currently is $26, so it's still not going to break the bank for most people.
We also do a "buy 4 get 1 free" show special at every show. This also bumps up the total price but the customer gets a bit of a deal for buying in more volume.
So, you don't necessarily have to have higher priced individual items. You can just take some of your lower priced items, put them together in a sensible gift set, and have a higher priced item made up of your lower priced products. You can also do a show special if you'd like, to encourage people to buy more than 1.