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Here's an example of how I have tested it. Sale price 9000 and buy price 6000. I put in an order for 6005. Bot does 6006 and cancels 6000 about a second or two apart. I go to 6500 and then bot does 6501. I do 7000 and bot does 7001. Each time the bot cancels it's previous order. Now the top three prices are 7001 bot, 7000 me 6000 next best bid. I cancel my 7000 and the bot stays at 7001 until a buy happens even though it is now 1000 above the next best bid. It doesn't expect this to happen so it isn't programmed to correct the large over bid. Individuals don't leave the high bid all alone. Individuals will cancel and lower when they see that they are way above the market.
The bot doesn't. Once the buy happens it switches and sells. As long as it is the best price the program works. I've been playing the market for 10 years and have never seen anything like this before.

What really sucks is when the bot buys and then sells and then bids again before you can buy your card. I've seen this happen. I feel like I have to wait for the bot to get his purchase done and hope I can buy mine before he switches back to the buy side again.

It's actually worse than what is being discussed here. I've been watching it out of curiosity. The bot will enter a buy order 1 above the best bid. Any higher bid and it will cancel and go 1 above again. It usually happens 10 seconds after the higher bid is entered. Sometimes as long as 25 seconds. Once the bot makes a purchase it flips over and lists the item for sale at 1 below the best offer and repeats the process. Once the sale happens it starts all over again with a new buy order. This usually happens when the spread is about 1000 to 2000 between buy and sell. It is soooo annoying if you are trying to buy or sell an item.

The Cal Raleigh card is a perfect example of when it happens. It has enough spread, trades not too often and isn't too large a price.