Screen door roller replacement

A home owner from Chicago, IL says:
September 26, 2014
Hi,

I live in a condo where the patio screen door rollers have rusted and need to be replaced. I was hoping to see if you had any recommendations for a replacement part, as I have found close, but no exact match. The condo maintenance has offered to replace them, but at what I feel is a rather steep up-charge of $30. If you feel this is a fair price for this product, I'd be open to this feedback.

Thanks!
User submitted photos of a patio screen door roller.
A home owner from Chicago, IL says:
September 26, 2014
I miscalculated, the length is 2 7/16 inches, not 2 5/16 inches.
Profile picture of Paul
Paul from SWISCO responded:
October 1, 2014
Sure, have a look at our 84-074 and let me know if this can work for you as a replacement.
A professional from California says:
October 2, 2014
Please clarify "steep up-charge of $30".
Is that the total including parts? 2 rollers or 4? labor included? Just parts? Per roller? If that's the total for 2 or 4 rollers, jump on it.
Screen Door Roller, 1" Steel BB Concave
Screen Door Roller, 1" Steel BB Concave
84-074
$5.20
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