alrighty, here i got a cool 42" TV i'll give it to you for 55$ because i like your shirt, deal?
I totally appreciate the compliment on this shirt, but I got it as a gift from my girlfriend's mom - and frankly I'm just wearing it to please her. I'll give you 30 and the shirt off my back. 
okay, cool, i'll take your shirt for $30 but do you want to buy my TV? i'll give you a potato sack to wear in the mean time
Of course so I give you 55 and I get the tv and you get my shirt for 30? I can go 55 on the TV if that's the case.