Make sure you check the shipping and handling charges for each site, since a few unscrupulous e-tailers undercut their competitors, then make up for it with overblown shipping costs.
When the public library system got into the business of renting movies, they were able to undercut the prices and give longer check-out times on older titles.
On November 19, 2006, Nintendo released the Wii for $249, which undercut the PS3 and the Xbox 360 dramatically.
On the east it is strongly undercut by the retrogressive erosion of the headwaters of the Red, Brazos and Colorado rivers of Texas, and presents a ragged escarpment, 500 to 800 ft.
For statuary, and "undercut" work generally, an elastic mould - of glue and treacle (80: 20 parts) - may be used; the mould, when set, is waterproofed by immersion in a solution of potassium bichromate followed by exposure to sunlight, or in some other way.