You have suggested that people will not pay $800 more for a Deus over an Explorer. Why not ? Is it because of the posts that it will be as deep as the Explorer when the new coil comes ? Well the new coil came and in my area no improvement what so ever no doubt due to the extra pickup area causing more problems with mineralisation.
If people think painting a stripe down the middle of their car and adding alloy wheels makes it go faster then good luck buy a Deus. The rest will think that the price should offer something new rather than the wireless coil gimmick. The first wireless coil came out twenty/twenty five years back. It didn't make much impression.
For those who want to save money the Goldbug DP is very near in depth and you would have a pile of money left over to buy say a really good beach machine. Or get a Fisher F75 Ltd or Blisstool LTCX64 V.2. The Neptune was demonstrated a few months back on a well detected site little bigger than a tennis court after XP's, Minelab, Tesoro etc used and located over forty Roman coins that the other detectors had missed. Seems they use a slightly different approach to filtering which allowed better ferrous/non ferrous I.D. There's a distinct silence on reporting those who have "upgraded" from the early XP flagship Goldmaxx and Power models to the Deus and been slightly disappointed. I found the Deus to be better than both these and the GMaxx models but there has to be more care and thought involved because if settings are not correct its easier leave good items in the soil.
If writing a report on a new detector, especially if its going to be used in a different country looking for very different items, then both good and bad should be published. Also consider the coil situation. I assume that the wireless circuit in the coils will have been patented which will restrict third party developers. There's very limited sizes at the moment and without competition then the prices are likely to remain higher than all the other brands on the market (except Nexus who write their own rules on large coil prices).
Funny you should mention the upset over U.K. prices. If they were that worried they should have bought one through Germany. Much cheaper for those in Britain and the U.S. The last place to buy a detector is Britain unless they are desperate to try and get a machine selling. Look round Europe and you could get both a good discount and a longer warranty.