Thanks to shortlist, you can create a list of offers, and then send a bulk inquiry to the wholesalers. You should use it for general inquiries, like questions about availability of the products, because your message will be sent in regard to all offers added to shortlist.
You can also use shortlist to keep your offers for a while, and view them some time later. Just do not forget, that they will not last there forever, and will be gone once your cookie files will expire. To keep some offers for infinite time, please use "add to favorites" option, which is available for each and every offer on Merkandi.