Let the seller know - they will keep mailing it that way unless they know that it is a problem.
Around here, you could get $10 - $15 on CraigsList for something like that, if complete, in good condition. Different people like different things. Or, we have tradition around here, usually called something like the 'Xmas Giving Tread', which usually starts up in a month or 2: folks offer stuff for free, or for the cost of shipping, to other members. Could save it for that.
No reason why cutters can't be consistent length AND have progressively filed depth gauges!
Philbert
No, but the length doesn't need to be
that consistent - and it is a waste of chain life to file all of them according to the most damaged one.
What creates a need for all cutters to be the exact same length are badly designed raker guides, that ride on two cutters, and thereby mess up the raker setting when all cutters aren't exactly the same length.
Now this guide sets the rakers to the individual cutter, but the raker guide part of it still is useless for anything but new chain for hard wood, as .025" is too shallow for anything else (if it works as intended that is, some uncertainty has been created about that).
Another possible issue is that the slots that ride over the chain are so deep that the also go down on the bar - which creates the question if they can be pushed over enough to hold the chain firmly or not. The answer likely depends on how tight the slots fit on the bar - when they are that deep they should fit snugly on the chain, but not on the bar. A chain that is rocking over when you file it (they always do to some degree, unless manually pushed over, or locked in a wise) will not get a straight cutting edge when the angles are locked to the bar, and not the chain.