The first two are Wood Sandpipers, note the well marker super & spotting on the brown upper parts.
The third is a Green Sandpiper, note how much darker the upper parts are compared to the Wood Sand & the lack of distinct spotting.
With the variety in quality you mention I’d be inclined to refuse to buy them if the didn’t check them for you.
Not very good advertisement for Swarovski, it’s like them denying there’s quite a broad range in quality between individual pairs of bins
I know they have a brilliant record with...