Once in a while I check Amazon site for Nursery pots, and I found those pots by Hydrofarm to be very strong and Durable. and if you have Amazon Prime the price is right...
I bought them last year and they were the best I had, but then the shipping went Mile high...
but today the shipping is Zilch if you have Amazon Prime...
the Link Below
Mark

http://smile.amazon.com/gp/product/B00CG4EIBA?psc=1&redirect=true&ref_=od_aui_detailpages00

http://smile.amazon.com/gp/product/B00CG4EOCS?psc=1&redirect=true&ref_=od_aui_detailpages00

http://smile.amazon.com/gp/product/B00CG4ES2Y?psc=1&redirect=true&ref_=od_aui_detailpages00

Mark, the link you provided is the seller. Are you referring to this item?

http://www.amazon.com/Gallon-Premium-Nursery-Container-Hydrofarm/dp/B0095ZD6M0/ref=sr_1_22?m=AKV578YBJWOB6&s=merchant-items&ie=UTF8&qid=1447188606&sr=1-22&refinements=p_4%3AHydrofarm

I got 20 packs from home depot and they are incredibly sturdy, not the flimsy stuff. Winds up being less than $1 each. Looks almost identical to what you mentioned and cheaper ;)
http://www.homedepot.com/p/Hydroponics-Organic-1-Gal-Nursery-Pots-20-Pack-VHPP100-20/202985178?MERCH=REC-_-PIPHorizontal1_rr-_-203221812-_-202985178-_-N

The link you posted goes to the seller page, but not a specific pot. If you search for pot then you see a list of some, but it looks to me like yes, the shipping is free, but not related to prime. Looks like shipping is free for everyone unless I'm missing something.

Sorry I corrected the problem above ...I was writing about the 10 , 15 , and 20 gallon Nursery Pots.
Mark

Thats really nice pot for such a cheap price. My brother has prime so i can get him to order me 5 or so.

Nice.  Hopefully the prime deal lasts more than a day?  I know what I want for christmas...

here's a 25 gallon pot that IS exclusively for prime member and has prime shipping.

http://www.amazon.com/Gro-Pro-Premium-Nursery-Pot/dp/B00WC00LPA/ref=sr_1_3?ie=UTF8&qid=1447217889&sr=8-3&keywords=20+gallon+pot

You can also select smaller sizes, but they aren't as good a deal as those linked above.  But this is a 25 gallon option for those interested.

For those looking for larger nursery pots, I recently purchased the bundle of ten 25-gallon pots (HC25) from the A.M. Leonard website located here:

http://www.amleo.com/haviland-plastics-hpp-large-blow-molded-nursery-containers/p/VP-HC/

I waited for a free shipping offer before finally ordering making the cost per pot $7.50.

Quality of the pots is outstanding.

There are some good deals on craigslist. Some used & some new....
https://orangecounty.craigslist.org/grd/5294432658.html

Just placed same order for 10. Thanks for the info.

I ordered some of these last night also. Thank you for pointing out the free shipping.

Glad others got in on this deal, I picked up (20) 10 gallon pots for up-potting next season as well. 

I get mine from growers solution. They have a website and are on eBay.

Does anyone know where you can get sturdy 25 gallon pots or larger in the color white rather than black? Black pots get too hot here and it's a nuisance to have to paint them all. Self watering would be nice.