I would look for a knock off with some good reviews and maybe budget $100-150 vs get the very cheapest. It only takes 3 drill holes to adapt the sap from 5/7 series of same vintage so if you can, say find an oem for a 5/7 series at a reasonable price I would do that. Less than an hour to swap and it's not mission critical. You can go for weeks with the sap SES you just will polutte mote while doing it.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)