Heh heh, welcome to the boards! I reckon you're going to want unslabbed copies of those last three so you can actually read them...Glad to see some silver in their!
Yep, it's true you don't need to spend a fortune to get good comics if you're happy to wait and keeping checking for new listings, (or wherever it is you buy your books.) I recently decided to track down all the Marshall Rogers Doctor Strange issues from 1981/82, numbers 48 to 53. Didn't take too long and I got them all for good prices, all in fine or better condition. Don't get too caught up in the 9.8 madness, get books you can really enjoy looking at and build your collection that way. Just having the covers to look at behind plastic isn't really a lot of fun, a bit like having a car you can never drive!