@MiSJAH
Finally, i have a definitive answer from MSI US.
They have offered me the following:
GT72VR Dominator Pro DRAGON-638 = $60 upgrade cost
GT73VR Titan 4K-480 = $600 upgrade cost
GT73VR TITAN PRO-866 = $750 upgrade cost
The latter is in there as when i did some looking around, 1080 cards in MXM format are still super hard to find and seem to be really expensive when they are available. Not to mention some slight differences between models like Clevo/MSI/Alienware etc. So as the first 2 options were for the 1070, i asked how much the equivelant 1080 would be.
Now to me, these prices seem immediatly more reasonable than the first and second iterations i received. The $60 one is missing some upgrades, but i have been told i can keep the additional ram and SSD from my unit and fit them to that one. I do not know if i am allowed to do that for the other models though.
For reference the three prices in GBP are currently £46.52, £465.23, and £581.54.
Looking around, a 1070 desktop card is little over £400 so, £465 seems roughly correct, no?
My decision now will be whether or not to go for one of these options (bearing in mind these cards are over 12 months old now), or wait until Volta is released. The problem with the latter is i do not know when it will be released (most likely next year), i will most likely have to pay even more money for the new gen GPU, and we have no idea if it is even just an iteration of current gen transistors with increases dye size, or if they will introduce the anticipated 10nm tech.
What do you guys think? A refund is practically off the table unless i go through the judicial system, which could take as long as Volta anyway lol.