That one cost me the most. By that point, we were earning well. Got engaged young and therefore the engagement ring was all we could afford, and was probably about £50 from Argos. It was a token more than anything. Wedding rings were plain for both of us, so this was the first chance for some decent bling on her hand.
An eternity ring usually is more expensive ,not only because several years will have passed since you bought the engagement ring. If you can , suggest a channel set ring rather than the full eternity ring. The diamonds on the underside of a full eternity ring are prone to being battered about and falling out. As to cost it should be what you can afford without going in to debt.
Having found what one is, my suggestion is not to get one. An engagement ring and wedding ring is more then enough. However, of you must persist in wasting money, I did see one for 199, which seems fair
2andabit k, oh and a box of those white donuts with jam in that you get from the PX in boxes of 10, the ones with powdered sugar on, and a quick razz around on a grifter with playing card pegged to the spokes for authentic motorbike sounds.
A snip, literally (with pruning shears)