i think there's something to be said for that #46. but i also understand that when a person (read = me) is learning anything, there's a tendancy to buy one's way to understanding. it's the old 80 / 20 rule: we use 20%, 80% of the time. it can be vocabulary, mechanic tools, or _______ (fill in the blank).
just check the micro-mark catalog. how many gadgets for $19.95 plus shippng & handling are in there that are - well, not that useful, to be kind - to someone with modeling skills above beginner level? yet, people buy them because they have money but have not yet developed skills or have experience to do the task another way.
this is true with a multitude of things; the next i am most familiar is woodworking catalogs.
but after doing something as a vocation for 40 years, i routinely use the same handful of tools every day instead of running out and getting the latest gee gaw or doo dad which is purported to do the job for me.
unfortunately, my automotive & mechanical experience is not advanced to enable me to make blowers, heads, kidney slot wheels, or pie crust slicks. so i go out and buy them in hopes that getting something built will actually encourage me to learn more and in time grow my ability to keep up with my imagination.
photo etch? i'd rather take out my own appendix with a spoon!