If it is a simple pattern (by my standard of simple) based on squares, triangles, rectangles that is obvious how to piece it and the sizes that would be needed w/ straight forward math, there is not a chance I would "buy the pattern" If I look at it and either can't figure out how to make it or believe the pattern maker may have a better (easier) technique then what my mind comes up with, that is a pattern I would (and have) buy. If it is a fpp detailed picture I "could" make that pattern, but would not, I would buy that pattern. I hate making "test" blocks so the likelihood of me "blindly" following someone else's pattern is pretty slim, I would still draw out my own to test the size and make sure they are using the full 1/4 inch seam allowance. The exception to this is the detailed pictoral fpp those ones I do go on blind faith.