Retroplayer:
Yep. You can't even buy the regulators for that little. I guess I am glad I didn't order that model. I was actually just looking at those a couple weeks ago, but decided to buy mine from nkcelectronics instead which is 3.3/5V independently selectable for each rail (no on/off switch built in, though.) I like it.https://www.nkcelectronics.com/readboard-Power-Supply-Stick-Dual-Voltage-5V-and-33V_p_374.html
Its a nice little board. Seems to have been designed for the MB102 breadboard even though its description doesn't say so. Its probably priced right since it comes assembled, but watch out for the shipping cost. Start a blog and let us know how it works out.