It COSTS the city/town money!!!

Of course there is another option you haven't thought of. I, too, live in a multi-unit complex and we also don't have city/town trash pick up. I know my neighbors who live in houses that do have city/town trash pick up. I simply ask them if they would mind my putting it out with their trash. They have always not minded. I then call the place that the city/town contracts with and let them know a mattress will be in front of (give address) and then they pick it up. This is a great reason for knowing your neighbors!!!