Looking for webpage designed and developed by the same person.
Yes. Escrow is must.
You're sure to get a terrible quality page either in terms of the design or functionality. Good developers are not good designers and the same applies the other way around. PhotoShop experts are used to design web pages for a reason. Developers just code the designs given without modifying anything. Split the bounty in two $250 for designer & $250 for the developer.