I am looking for a formula that allows the spreadsheet to look in a range of
weights, selects the proper weight range and returns the corresponding rate
associated w/ that weight break. Not sure I can do it justice w/out an
example.

Weight Breaks in POUNDS
0-999 1,000-1,999 2,000-4,999 5,000-9,999 + 10,000
$0.1829 $0.1568 $0.1318 $0.1023 $0.0925