TSC $1 per block when you buy a box of 10 $1.25/block at OSJL. Close to a buck each when buying a box of 8
Like buZZsaw BRAD I buy the 40lb bags of black oil sunflower seeds and either the peanut or woodpecker suet by the box. Usually at Lowe's. All of the feed stores around here are well out of the suburban areas and the Urban Pet stores are way too expensive. The birds show a decided preference for the nut, fruit or woodpecker suet!
Wrens are common around here and we get an occasional one at the feeder. Small solitary birds that can be noisy little things.
We have Carolina Wrens. They are noisy as you mention. They come to both the black oil tube feeder and suet block. Lots of winter Juncos around these days.