What are average profit margins?

For online widget sales.

[ptech]

I know this is a general question but I'm only hoping for a general answer. I sell refurbished widgets and new and used widget parts. Margins are generally between 40-50%. But the amount of time spent with widget technical support and warranty support is driving me crazy, so I'm looking at selling other products that don't require so much customer hand-holding. What kind of margins can I expect from most niche products?

[andy_boyd]

If I get an order in for $50, I make about $25.

Shipping will cost about $15, product will cost about $10.

[Essex_boy]

I make 30 - 35 % AFTER card costs are taken out shipping is extra and I charge at cost. Except for the box, I make around 100% markup on it.