You seem to equate gateway product = affordable but, IMHO, a gateway product is something that people who are not in the field are likely to stumble upon. I recently saw Arduino kits for kids at a small local bookstore, I can imagine someone thinking "hey this electronic thingy looks cool I'll buy one for my niece's birthday". On the flip side, people who don't know anything about microcontrollers are not going to look online for Chinese Arduino clones.