If the lot is on direct sale use the shopping basket.

Add to the basket all the lots you are interested in and once you have finished, click on the option Buy. If you are already a member of todocoleccion, use your account to identify yourself. If you are not yet a member, you can
sign up by providing those data so that your order arrives correctly.
If the lot is in auction you will have to bid for it.

Set your bid. If someone outbid you we will contact you in case you want to raise it. You can also set a maximum bid, or in other words, the highest price you would be willing to pay for that lot.
In that case the system will bid for you to prevent you from losing the lot. When the auction ends we will let you know if you are the winner.