Spent too much!
I have a list of 20 or so items I keep an eye on so if a bargain pops up, however only 3 of those I snagged in the Prime event.
1. Bsoch IXO 6 screwdriver - £33 - Cheapest it's ever been (for the 6th gen version. normally £45-50), my neighbour is a carpenter and when I asked how did he screw all the bracketry and trims on the tops of tall units he leant me his older Bosch IXO screwdriver that looked like a toy but was perfect and he's had that a number of years and says its the most valuable tool in the box.
2. EzViz Wired Doorbell kit - £89 - Cheapest that's every been (£109 normally). Not the best, but crucially I can connect it to my Hikvision NVR for full time recording and as long as it chimes when the door is pressed thats all I need! Also had the 16gb micro SD thrown in from their regular promotion.
3. BX500 1TB SSDs - £53 - Cheapest I've seen it anywhere (currently £60-70 everywhere) but I needed 2 of these for laptop spinning disk replacements.
I am still looking for a robot vacuum (our entire ground floor is hard flooring and would be an ideal candidate for automation!), but the requirements of Pet Waste detection, Auto-empty bin, Mop ability (Happy to manually fill/empty water) and good features to map/set no go areas had me looking at the heftily discounted Ecovacs Omni X1 (£899).. Ecovacs UK sales entitity matched the prime event price and even had an extra 5% off, but I'm not ready to spend £830+ on a robot vacuum, my comfort level is £400..
Other than that, nothing jumped out from my other 17 items in my wish list.