Well worth using for bending angle iron or flat bending on making "flat corners" that are hard to control with out crimping. with setting a good spacing for various width could also be used from thin up to very heavy bar stock.
Anyone that has looked for an anvil recently, can tell you they are expensive. If you can't afford one right now, get creative. A section of railroad track, is a good (inexpensive) start. You could do what this person did , and add to it.