Baseball clay

Hello all new to this so stay with me
My husband and I will be starting our cob home proses soon hopefully and the homesite has a lot of clay in it already but from the test bricks iv done I'm gonna need more so I was looking around and now that we are in the middle of no where( 2 hours from town )that the only clay mix is the baseball clay and it's $50 a yard I havnt made any test bricks with it yet because I'm not even use if it'll work correctly so I don't wanna to dip into the cob house fund if I'm just gonna end up not being able to use it ... As far as I can tell the mix ratio is 3 -1 one being clay so I won't really be a lot would it work any ideas
Thanks for any and all info

Michelle; Don't kid yourself... making cob is hard work! Suggest you look for hungry broke preteens to help. LOL good luck on your project !

What part of the country do you live in? How deep have you dug looking for clay soil? Do you have a county ag extension or similar resource that can tell you about local soil types?

Local building contractors should be able to tell you what is available, and maybe dump a load of clayey soil from an excavating job for very little, if you really don't have any good material on your property.