This is also the case for the 737NG.
Boeing 737-600 $46,000,000 $511,111 149 528 mph 3,539 mi (4,718 max) 30 min 1998- 2 weeks
Boeing 737-700 $52,000,000 $577,778 149 528 mph 3,452 mi (4,603 max) 35 min Winglets 1998- 2 weeks
Boeing 737-800 $61,000,000 $677,778 189 528 mph 3,194 mi (4,258 max) 35 min Winglets 1998- 2 weeks
Again, from wikipedia, with winglet (not saying it's 100% correct, just a quick reference and probably not too far off):
737-600 WL: 3,225 nmi (5,970 km)
737-700 WL: 3,440 nmi (6,370 km)
737-800 WL: 3,115 nmi (5,765 km)
The 737-600 has a shorter range than the 737-700, and in fact the range of the -600 and -800 are similar, but AE has it such the range are ordered -800 << -700 < -600.
Where can I report these? Sorry, I am quite new here.