From those pictures, it looks like there are way too many coats of thick paint. If I really wanted the frame and it were a good deal, I'd probably buy it, have it stripped, assess the crack better and consider having it welded, then start over with a new paint job.

...that's if it's a really good deal. My general rule is: don't buy broken (cracked) bikes.

But that's just me. You should do whatever's right for you.