Anything over half the cost of a new dryer - replace it. It's a
no-brainer - you get a new machine and a warranty.

I agree with john.. replace it

Where did you see a gas dryer for $270? That seems awfully low to me -
usually they are almost double the cost of electric models.

I just bought a new gas dryer from sears for $399. It was the extra large
model so I could definitly see a $270 dryer being reasonable.

Crayola