A lot of PS4 games I bought off eBay for £35 new and then traded in a week later for a profit. I've even got new(ish) games for £20-30 when they are still £50 digitally. I remember when companies justified season passes and microtransactions because of second hand sales so theoretically by this logic, if things do go digital, publishers would remove all such things...No chance of that happening!
Yep! Digital tax is high so games will be around the £50-60 mark I expect even without production and shipping. It will kill off many retail stores selling as people would likely just buy from source especially if there are pre-order exclusives for the likes of PSN and Xbox Live. Nobody really goes out and buys digital keys from the likes of GAME for instance.
Instead of companies buying games in bulk, they'll likely just sell them on behalf of the publisher and receive a small 5% cut rather than buy 5,000 copies of a game for most stores at a bulk rate from pre-orders. I couldn't see GAME buying 10,000 keys at £45 a pop for instance.