I've been looking for a club to fit between my 19° hybrid (Titleist 818H2) and 5-iron for a while. I have a 23° 818H2, but that doesn't give me the right gapping (it's only about 10 yards shorter than the 19°, leaving a gap of around 20 yards to the 5-iron) - the other option that I have is a Mizuno MP18 MMC Fli Hi 4-iron, but that's too close to the 5-iron...
I noticed that golfclubs4cash (a local second hand clubs dealer) had a few Mizuno Pro Fli Hi 4-irons on sale last week - new in plastic for £90, with the Speeder Evolution HB shaft (85g in stiff flex - maybe a little too much for me, but I have a Tensei AV Blue to switch in if needed) - but decided to wait, as I had a bit of launch monitor time booked on Tuesday (the pro at my club was offering a half-hour lesson, a gapping session and loft/lie check). That resulted in some adjustments to the MP18 MMC Fli Hi, mainly to extend it by half an inch, so I wanted to wait until I'd had a chance to hit that before trying (or buying) another club to fill that gap.
An e-mail from golfclubs4cash arrived this morning with a discount code, though (Valentine's Day-related, for what it's worth), so I checked if they had any of the Mizuno Pro Fli Hi irons left. I ended up getting the last one priced at £90, with the code giving me 14% off what was already a very good price for a new club.
