i work at radioshack, and we have a TON of people come in for phones... you dont make "commission", you make what we call Spiffs.. with a new customer, on a low plan, you make about 10-15 dollars per phone, and on a high plan 20-25.. so if you get a couple to get a family plan with a lot of min., you could make $50 in about 30 min. plus your hourly, which is usually 6.50 starting out.

upgrades are $8 per phone. and all you spiff goes straight to your check, it isnt a percent of the phones worth or anything. you also gain a few bucks if you add service plans and/or accessories.

you only make commission on parts, batteries, and accessories, and it's only 2.75%.. so hourly and phones are where the money is at.

hope that helped, pm me with any questions.