[jetru]

I don't think being purely front-end means that you will get a lower salary, because I've seen front-end and UX people get paid equal salaries. Some of the ninja UX guys get paid really well.

If you are purposely staying in this place because "the work is good", then make sure that the $10k-20k less that you're making is worth the extra goodness, whatever it is. It's always a tradeoff. Also, no harm negotiating a raise.

In the end, you are selling your services, so don't get jipped. The very fact that you are here is a strong indication that might be.