Cisco Catalyst 2960-8TC-S Fiber link.

I see I meant  SFP module, is it usuallly sold separate, do the specs vary with fiber distances or there just one type for all 2960 models.

they are typically sold separately and you purchase them to meet the spec for you distance and fiber type, single-mode or multi-mode. obviously you need a pair, one for each end.

you can do one thing....
to reduce the cost you can purchase media converter.
in the LIU ..you can use fiber patch cord to media convertor and the other side you can use UTP patch cord to your switch to get the connectivity

depending on the units, media converters can be more expensive than the SFPs. If you have the slots it's probably cheaper, and much much easier to troubleshoot, SFPs than media transceivers. With the SFPs the port error counters on the switch will represent what is happening on the fiber link, where the setup using patch cables to the transceivers with the fiber run between them instead will often not pass any kind of errors on the link upstream to the physical ports on the switch. I have this issue with some transitions networks fiber-to-copper units. They work very well and we've had very few failures but the few that have failed have been difficult to troubleshoot since we couldn't see any error counters incrementing.

I would think a media tranciever for 1800ft would be cheaper, do you know what they cost for 1GB uplink?