Has anyone heard of, or indeed using, the eBook solution from Rising Stars? With Overdrive clearly being OTT (sorry MLS (who incidentally are still extremely helpful)) we're just pouting around for options that don't cost the earth unnecessarily.

eBooks : Rising Stars - Educational Publishing Specialists

Fully owned ebooks in any format you need, downloadable via dropbox, unrestricted use on as many devices as you like, at home or school and a one-off payment to get going (no licensing/subscription costs). Ebook costs appear very reasonable at £12.50 a go (remember, unlimited use). This seems like an extremely good choice but would like some feedback or thoughts from anyone else.