I've Been keeping an eye on this porch swing at Lowes, it finally went on sale today. Normally $148, dropped to $98. With a 10% off movers coupon, comes down to $88.20 before tax where applicable.
It doesn't have the best reviews but for under $100, can't expect it to last years and years. Floor model was quite comfortable.
Weight limit 500lbs
1 year warranty