Cost around £100 landed in UK with DHL (best carrier), inc extra battery, case and screen-protector. Got here after one false start - they got caught by a battery spot check on their way out and had to go back for some ridiculous volume of paperwork (never had this before and everything I've brought in from China has a Li battery). Took around a week in total, rather than a few days.
Only used a little, but very impressed with the specs and build quality. I think the size and weight is quite decent.
The trick to get the back off is to insert a credit card in the slot on the base - an intentional design feature I assume, which works well.
Mine also did not have a wobbly home key.
I will let you know how my parents got on using them for a while.