hi
this could be betfairs supper bot in action, i have noticed that all but the winner go to 1000.00 odds then drop back to the prev odds, so as to catch us out that bet below the limit, because you have a 2€ bet at 1000.00 odds then your lower odds to bet on, and the reverse with lay betting you lay 2€ at 1.01 then your other amount at the odds you set, so it matches your 1.01 at 2€ and your set odds doesn't get matched.
mcbee