Reverse Holo Pokemon cards are definitely worth more than their regular counterparts. For one, they're much rarer - usually only about 1 in every 10 packs will contain a Reverse Holo card. Secondly, they look absolutely amazing - the holographic effect really makes the card stand out. Finally, collectors tend to be willing to pay more for Reverse Holo cards because of their desirability.
So, if you're looking to sell your Reverse Holo cards, you can expect to get a pretty penny for them!