Possibly, the only thing in the store fitting that claim.
Not even sure its true. Went to the website and I can burn a gallon of gas and an hour of time and pay local sales tax for $89.99. We'll round that up to $100 for expenses and annoyance. I'd pay someone $5 to fetch it for me to avoid the wasted time and having to wait in line and hear all about the great deal they could offer on a cell phone, so I feel rounding up to $100 is fair.
Or UPS can drop one off tomorrow (well, worst case, Friday) for only $67.99 and ordering it takes less than a minute compared to the agony of going to RS.
So sure, I'll pay about 1/3 less to get it from Amazon.
If I have plenty of shipping time adafruit sells then for $55 (plus shipping, they hide their shipping costs deep in the checkout process so I donno and I won't shop there because I can't compare)
Digikey will match the price $55 and they're honest about shipping estimates which would be $3.22 USPS first class (maybe), or $10 if I want UPS (eh, just use amazon) And living nearby I'll get it tomorrow or Friday at worst.
Lets be realistic, I have a busy-ish day today and I can't get out to RS anyway until maybe saturday, so Prime is not only cheaper but faster, and if I had to squeeze every penny I could save another $5 or so by ordering from digikey.