We want to sell Upgraded RC's. Thank you
This is a tough situation, this is strictly my opinion.....
A person is not going to buy an ECX 4 top dollar, ECX is your beginner high-end RC product. Very easy to work on, and yes there is a handful of upgrades. Literally everything is upgradeable using other brands.
I currently built to (2) 2-wheel drive torment and to (2) 2-wheel drive boost over the winter and raced them this Summer. I will be posting updates here soon once I get them cleaned up and the pros and cons of certain upgrades. I personally think that if someone wants to upgrade something the only way they're going to learn the hobby is to do it themselves. On the flip side of that I think you have an awesome idea. I would put it out there, that this is what it costs for the stock brand new or stock used. And put together with other person a budget of a build. Some people just do not want to build them up themselves. They want an RTR. It's just when a beginner gets into a hobby and they see that high dollar price tag they are going to shy away from it. If you can pick up a brushless RC for under $200 it's a winning situation. But just because someone has a brushless Electronics on an RC does not mean you're on the road for a awesome running RC. The flip side of things on this purchasing used RC for under $200 with a brushless Electronics, the other person may have not ever touched it for maintenance. Stock Parts wear out, on top of upgraded Parts wear out. If the user does not maintain their RC, stuff breaks down. Majority of your used product on eBay is broken down used Orsi's. Unless someone literally will come out and say I stand behind this product and you will be very very satisfied with it. Huge expense obviously and they might not know either, is the batteries and the charger.
Again, you're on to something good. If you've done your research and watched eBay, here, or other hobby shops/brand new just to watch overall pricing. You might be ahead of the Curve.
I do know if you're planning on making hand-over-fist money on this, I just don't think that you're going to make money. If you're doing it because of the love of the hobby, do it.
Okay, I have rambled on, yada yada yada, Etc. Hopefully this is enough mumble-jumble to clarify my opinion and thoughts.