If you use Pre-Seed personal lubricant, you might want to take advantage of the subscribe and save program with Amazon.com. With this service, you can have a 40 gram tube of Pre-Seed auto-delivered to your home every two months for about $19 per tube (price is subject to change).

It's a savings of about $5 per tube.

Pre-Seed is family friendly and sperm friendly
Pre-Seed is water based and compatible with latex and polyurithane condoms
Pre-Seed uses disposable applicators

For this deal (while it is available) click on this link: Pre-Seed on Amazon