Also check with the local Blacksmithing groups in your area. There are usually several members in any group who have extra anvils for sale/trade. And sometimes they will even give a new person a break on price - to help get them started.
The big national group to start with is ABANA - Artist Blacksmith Association of North America.
UMBA - Upper Midwest Blacksmith Association
BAM - Blacksmith Association of Missouri
AFC - Alabama Forge Council
GOM - Guilde of Metalsmiths
All of these have web sites, and have lists of their chapters, plus sources for tools/supplies.
And then check out Centaur Forge over in Burlington Wisconsin. They are one of the largest horse shoeing supply companies in the US. But also one of the larger blacksmithing suppliers. And BOOKS! and VIDEO's!!!!
www.centaurforge.com is their web site if I remember correctly. And they will send you a free catalog if you ask. Truely a "candy store" for blacksmiths ... oh, yeah, and farriers also.
There are some pretty good new anvils coming out of the old Czech republic. I can't remember the specifics, but they should be listed on the Rescources lists of any of the organizations listed above.
A "substitute" for a hardy hole is your vise. Just clamp your hardy tool in your vise. It's not quite so convenient, but it works. I sometimes do it to have two different hardy tools available without having to swap them out all the time.
Anvil substitute? A section from a BIG I beam works wonders. They have a lot of the mass you would like, and a big flat face. A little creative cutting torch work and grinding can get you a horn on one end. Plus drill a hole and do a little filing and you have a hardy hole.
One guy I know cuts sections from the tines/forks of an old forklift to use as anvils for the blacksmithing classes he holds. And his students then have a working "anvil" to take home. He cuts them to length, torch cuts one end to a point, grinds it rounded to form the horn, then welds on some metal "tabs" to use to bolt/spike it to a base. A fairly quick simple working anvil.
I have cut up several large "tool bars" from farm plows and cultivators to form into square and T shaped "stump" anvils. I just work around not having a hardy hole.
And then there is that large pie-wedge shaped granite rock I use for some Viking era blacksmithing. As long as you only work your iron when it is hot enough to glow red, the rock face holds up to the hammering - even along the edges. If you don't see any color in your metal, then you do start to "peck" away at the rock with each hammer blow.
An anvil is just a large flat surface to work metal on. I know people who have even used a green oak stump for an anvil. Yes it does burn/char, but you can do a lot of work on it. And a replacement is nearby.
Hope this helps. Do keep checking the farm sales in your area. And you might also want to put an add in the local "shopper" type paper. You never know where an old anvil might show up. But antique/junque shops tend to be high priced.
Mikey - yee ol' grumpy German blacksmith out in the Hinterlands