The suggested retail price is $29.99. It will also be sold in Japan May 19th. Hopefully a retail release will spread these great titles to more Xbox 360s out there.
There's no listed UK retail price. Limbo and Trials HD are both high scoring releases for XBLA, and 'Splosion Man didn't hurt in the sales department either. Should more hit digital titles see retail releases to help spread their good name?