I find I am more of a "buy it and build it" person that a scratchbuilder.
I have put off expensive kit purchases because I said "but I could build one for less..." only to get stuck with the reality of the time consuming process to "get it right". I have scratchbuilt a freight shed and signal tower, and it took quite a while for me to be happy with the both of them. If I had to do it over again, I probably would purchase a quality kit or kitbash several.
I can understand kitbashing-as this would be a very enjoyable form of kit building with multiple kits. I am working in G scale and O scale so these kits can get expensive, but the great thing about that added cost is the "instant gratification" you get when putting it together in a couple nights. Sure, you must detail, paint, weather to really make it look right, but its still very satisfying to actually see accomplishment in a short duration.
Scratchbuilders are VERY patient people! I cannot imagine how they can create such beautiful structures...I just simply do not have the patience for "fine scale" type work.
So a caution to those who want to jump from kit building to scratchbuilding: realize the satisfaction is a bit more tempered, although once the project is close to completed you may be very proud you "did it on your own".
Regards,
Tom M.