Where to buy a piece of wood (or substitute) I need

[drmeow]

I'm working on an IKEA Hack which involves, among other things, placing a shelf on top of some IKEA cabinets. The largest shelf I could find is 1 1/8" too narrow so I need to put a strip of wood (or suitable substitute) which is 1" to 1 1/8" (1 1/4" in a pinch) by 3/4" by a total of 74" (can be multiple pieces to get that length or larger cut down to that length) at the back of the shelf. These pieces of wood are just there to extent the shelf to (or almost to) the wall. All but about 1 inch at either end will be covered with something else. The wood does not have to be nice (although I'd like it to be primed or laminate so I don't have to paint bare wood).

I went to Lowe's but all I could find was 1 1/2" x 3/4" x 8' pvc board, 1 1/2" x 23/32" x 8' primed pine, or other un-primed nicer (poplar, others) wood which I still don't think were 3/4" (and were 3 times the price). It needs to be 3/4" because that is what the shelf is and I'd like it to be level (I suppose I could get away with 23/32 but it still needs to be less than 1 1/2&quot . I could use the 1 1/2" but it makes the shelf stick out 1/4 to 3/8 more than I want and prevents me from getting exactly the look I want.

I don't have a table saw so I can't buy a larger piece and cut it down into 1" strips (I have other saws which allow me to cut off the end but nothing that would realistically allow me to cut a 1" piece off of a long piece of wood).

Any suggestions on where I might be able to find what I'm looking for?

Thanks!