Fecpak was from £800-£1000 depending on whether you got a microscope and if so, what type. Kit includes scales, instructions, reference guides, some saline, measuring cylinders, special grid-marked slide, sample taker, all calibrated so you know you're working out x number of eggs per gram of sample.
I've done a couple, it gets easier, but it is a bit of a witch's brew!
Is there any RDPE type group near you? We have one close by that is letting farmers "share" a fecpak.