> looks basically identical and is quite comparably priced.

I disagree. That desk is priced at £407, whereas this one goes for £240. All else equal, that's significant.

I'd imagine that these desks cost roughly the same amount to produce and the only reason they're ~£400 is because it's a relatively niche product and is sold through a reseller, not direct.

This is they type of desk that I have and I saved a significant amount of money by just buying the legs and then getting a table top at Ikea. Most of this re-sellers are capturing their margins by having overpriced desktops included in the purchase.

This desk also has a cross bar for support and to conceal an axle which allows the desk to have a single beefy motor. I have found the cross beam to be crucial as I have used the desk off-and-on as part of my treadmill setup and every now and then you want to stabilize yourself holding the desk. Even with the cross beam it can wobble in this scenario.

Are the table tops standard or did you have to drill holes in the Ikea top to get it to fit?

just used a power screwdriver to screw the desk to the top

How is 560 comparably priced to 399?

This one is cheaper, and motorized.

this one is motorized too