18" Gas Lawn Aerator Rental - $38.70 After PM to Lowes - Home Depot B&M
Since Lowes was $43 for a half day, Home Depot's normal price was $56, so them PM'd it and took off 10% - I didn't even ask. A trick to renting these is to get them late in the day, and they'll let you return it next morning.
Not sure if this is a "slick deal", but with the dry weather and lawns browning out, might not be a bad idea to do before winter.
You can also add accidental insurance for $3.87 in case you break a tine, or something happens to the unit while in your possession. I picked it up since it was $1.29 split 3 ways. I did two lawns in a little over 2 hours. Both are pretty large lawns.