The marketplace gives consumers access to more than 300 products created using a 3-D printer.
Costco, OfficeMax and Williams-Sonoma were tops in availability testing, says Compuware Gomez.
Costco.com, OfficeMax.com and Williams-Sonoma.com placed first among large retailers in June availability tests, says Compuware Gomez. Last month, online shoppers using Internet Explorer could access Costco.com 99.99% of the time. OfficeMax.com and Williams-Sonoma.com both posted 99.99% ratings in Firefox site availability testing.
Six retailers (CDW.com, HSN.com, OfficeMax.com, Overstock.com, Sears.com, Target.com) tied for second in Internet Explorer tests with a score of 99.96%.
In Firefox testing, after OfficeMax.com and Williams-Sonoma.com, Amazon.com and Target tied for third place (99.95%) and Overstock.com was fifth (99.94%).
The average Internet Explorer availability for the 15 retailers measured in June was 99.78%, according to the Compuware Gomez Benchmarks study. The average Firefox availability for the same group of retailers last month was 99.71%.
Availability is determined by the percentage of times an e-commerce site loads properly.