The video is of the newly released Abrams, they upgraded both the M1A1 and the M1A2 to the new standard. I would presume they updated the M1A1 to have the suspension at the same time.

The price quoted is for UK retail, USA retail will be less more than likely. The price increases are down to increased material cost, increased shipping costs and increases in the quality and cost of living in China. Expect them to keep increasing as people want better wages. We have been living in a boom time of cheap consumer goods for a long time at the expense of these workers so enjoy it while it lasts.

Had any of these tanks been made in the UK or the USA, or any western country for that matter and the cost for these tanks would be a lot higher. I do think you are certainly paying a premium for these tanks, as nice as they are. I doubt I could sell them on eBay without making a loss (due to eBay fees).