More than your life!!
8x10 pictures can run anywhere from $60.00 to $120.00. Depending on condition.
$.29 for a 4x6 $1.69 for a 5x7 $3.49 for an 8x10
It is worth whatever the buyer will pay, no less, no more. How much you get for it depends on your notoriety as a photographer and your skill at negotiation.
Yes, you will need a certified professional and it will cost about $4000
It can cost as much as you like, I do installs from £250 upwards depends on what you want
49.99$
36p
Unless you're a professional photographer, probably nothing.
about 1,000$ to 1,500$
a billion dollars
1000$ for an 8x10