Hello and welcome to Zealo (GREAT "SMEGGIN" AVATAR NAME).
You have come to the right place for all things SCI-FI! We have MANY members who are into SCI-FI (including myself). So you should feel right at home here.
If you have any photos of some of your older (plastic) models, you are (more than) welcome to post them in the "PLASTIC" Section.
Once you have started building the paper models (that you are wanting to), please post a build thread of them.
Build threads are a GREAT way to show off your skills, talents and techniques. Not only that, but you can also highlight certain areas that yo may have problems with that you need help (or advice) on.
Too right you are, cost wise, paper models are GREATLY CHEAPER! Not only that, but there are more models available in paper than there are in plastic (regardless of the genre). Another good thing about paper (as a opposed to plastic) models, is that (if you have the template saved on your computer), if you make a mistake, you can always print out another part and fix the problem, or if you are not happy with the first build (which for me is generally the case), you can always print out another template, and build it again, this time make what ever improvements that you want to then.
With that being said, is there a particular model that you are looking for?
If you have any questions, comments, concerns, need help your advice, please feel free to ask and we will do what we can to help you (or at least point you in the right direction).
Once again, welcome aboard. I hope that you ENJOY yourself. I look forward to seeing your work!!!