Depending on where you get your co2 and shells you'll be spending about £2.15 per bang, that is not including misfires which do happen. I had one, but I lost it the first time I used it in anger lol.
If i were to get them i would get them like this https://www.weaponblender.com/uploads/image/ENGINEER-spread-WEB.jpg so it wouldnt realy matter if i didnt use them
Fair enough mate, but at 25 quid a pop you're thats £75 for three prop grenades... you looked into the dummy ones for hanging on your loadout?