battaglino...I have been testing these units for the manufacturer for a while ....so it "costs" me nothing except time to test the units.
They do not retail just the chips as far as I know.
But I can tell you that if they eventually do so, then try them on your bait, as they did work well last year in Barkley and Nootka.
As for them being built cheaper, they have indicated that they will be better than the first ones that were made three years ago, so although they look thinner, they are supposed to be more robust.
The extra fin on the flashers give them a better kick to activate the chip.
The six inch model worked very well on Sockeye last year in Port with a short leadered mp15.
boc