Attention: Book orders placed in the online store after Wednesday, May 20, will not ship until Tuesday, May 26, due to being out of the office. If you need the books more speedily, they can be ordered from Amazon as well. Thank you.

Refund policy

In the event you are not satisfied with something that you have purchased through L/L Research, we will gladly refund you the money if the item(s) are returned within 30 days of receiving your order, less the cost of shipping and handling. Please contact us.