So now I'm shopping around for a company to handle my next batch of mail. 

@Junard Lane I’ve used batch skiptracing with good success https://app.batchskiptracing.com/I tried propstreams skip tracing before that site and didn’t have good results

Export your list from propstream then import into Batch Skip.

If the only things the agent had to change on each offer was the a) seller's information b) property information c) price d) seller's agent's information;  it would not take them long.If you did the offers in big batches, and used a young hungry agent with a good commission agreement with their broker, they would probably do it for $20-$50 per offer.Of course they would also get the commission from any transactions.I am thinking somewhere in that price range the agent would be happy to submit as many offers as you want.

Any competent PM Co has a staff that processes routine financial items in large batches.

Batch skip tracing is what I preferred… Things like list source no longer are available to SC, but some how propstream still works.

Others use batch skip trace as well.

This house has 70s kitchen and batch finishes.

This is what my Direct Mail Marketing schedule usually looks like:Week 1: Send out your mail to your listWeek 1: (Optional) Start targeting your prospects with online adsWeek 2: Call up all your prospects to follow up the mailWeek 3: Send text messages to all the prospectsWeek 4: Leave voicemails (whenever possible)Week 5: Send out second batch of direct mailIf you stick to such a schedule consistently, success is only inevitable.Marketing is all about getting your name out there and standing out from the competition by any means possible. 

More importantly instead of waiting until you pay off the entire loan on the first house to by the second batch.