3. $50 is the standard base tip for any sexual activity to occur at a massage place "of that nature" and while I haven't been at it for as long as some, 50 has been standard for quite some time I think. As others have said, if that's not within your budget, yet your paying probably about that much per month for internet access I presume, www.pornhub.com and some tissues should suit your budget.
I can remember when the "base fee" used to be $20 for a straight HJ; many girls were'nt prepared to go nude, or even take the top off or allow a bit of touching. The $50 offer came in gradually as girls got less inhibited and went fully or partially nude. It is now pretty much standard, although some girls started asking $60.