If you want just check it out, you can use DEMO account: http://www.coinparator.com/cgqnYQ/ (althought it can't be edited and doesn't show any admin functions)
We liked idea behind Blockfolio, only problem is, that it's just an APP. And it can't be accessed from any other device than your telephone. For this reason we decided to develop our own website, that will be accesible from any device and any OS - PC, tablet, phone, Windows, Linux... . Basically...
If you kept it inside wallet, you new .dat file or SEED.
If you kept it inside exchange, you just have to reset password.
There isn't much more, that you can do (or anybody can do for you). If you don't have .dat file or seed, there is no way in.
I think it's currenctly impossible.
Crypto is complicated. And getting in even more. There would have to be a service on top of Dash, that would bring Dash into real world. People would not interact with blockchain directly, but through that service. I can't see any regular person at this point...
It realy depends where do you live.
Eg. In India or China it's super cheap. But in denmark it's 5x higher! Hard to be specific without knowing your situation.