I've bought a prime today for $49.95 now i feel i've made a bad move and it's overpriced

Please tell me i'm wrong and this is better than buying say 3x solo's
I am so excited for you!! That is a great move
If you ever have any questions or concerns please email me!
Sincerely,
Amber
amber@gawminers.comHi Amber
To test your service, I've purchased a Prime and a Genesis. I would like to understand something about the PRIME future features.
These are the rates for the SHA-256 and script algorithms, let's multiply them up to 0.01BTC, which is easy to understand and quantify for the ROI:
SHA-256 - 0.0000165 (average) , 606.06MH/s to gain 0.01BTC/day ( for 477$ )
Script ---- 0.00064 (zenpool) , 15.625MH/s to gain 0.01BTC/day ( for 314.25$ )
Let's talk about ROI. BTC/USD = 471
$/day for 1 GENESIS hashlet (7.95$) = 0.00777$, ROI in 7.95/0.00777= 1023 days
$/day for 1 PRIME hashlet (49.95$) = 0.30144$, ROI in 49.95/0.30144 165.70 days
$/day for 1 ZEN hashlet (20.95$) = 0.30144$, ROI in 20.95/0.30144 69.49 days
EDIT: the zenpool earnings have decreased a bit, from 0.00064 to 0.00061
Have I made some mistakes? Please correct me if I'm wrong.
I've just heard that with the PRIME service we will be able to switch up to 40GH/s for the SHA-256 algorithm, but that's all for now? Considering the rates, it seems more a waste of money than anything else. If, and only IF, the PRIME service could go up to 100MH/s, that could be interesting, but now it's totally useless.
Why should I pay 49 $ for a service like that? What can I expect and in what time? The boost feature it could have been integrated automatically, to BOOST a little the profits. If I pay you a lot, I expect something more from the service automatically, I can't go on clicking every time.
I don't want to be rude, but I find that the PRIME service it's a bit uninformative