I guess it depends upon what you mean by low value, but I have seen an amazing number of domains in the low hundreds being featured on Flippa (costs $19 for the listing and an additional $40 for the Feature listing). In total about one-fifth of the listings on Flippa are featured - which is a lot by my measurement.
I have no idea how many additional eyeballs you get for a low valued domain, but on Flippa it netted me about 1000 (that was before I was moved down to the third page of the featured listings, which at that point you do not get much visibility). Beyond that, I noticed quite a number of visitors to my site from NamePros, DNForum, and Experienced-People.net (Experienced-People was the best).
I did several other things such as a press release. Also, there are some domain groups on LinkedIn which deserve your attention. It's some amount of work, so it depends upon the domain name.
Hope this helps,
Rich