Correct this if I am incorrect but I believe TX to be the same in that $1500 is the limit (it may be $1000 but double check) for bullion purchases to be taxed. Sales tax can be avoided - know your local values.

-As an edit: avoid local sales tax whenever you can, but don't attempt to mislead Federal collectors when tax comes due. If you want to skip the IRS step, then, either purchase in cash in person or trade some good (a barter of goods) for whatever you seek to purchase in such there is no other record except the spoken word.

Correct this if I am incorrect but I believe TX to be the same in that $1500 is the limit (it may be $1000 but double check) for bullion purchases to be taxed. Sales tax can be avoided - know your local values..