Pricing would have made or broken the case for the Tesoro Gram Spectrum TKL in 2020 since the original full-size version launched for $140 in 2017, when things were less competitive. The fairly unique switches were a plus point back then, before everyone ended up with their own switches, and the buggier software with a worse user experience was also more pardonable at a time when the bar was low on average. Tesoro retained most of the features from the Gram Spectrum here with the Gram Spectrum TKL, but at a better relative price point and, more importantly, refined and complete software experience, which helps a lot.
Kailh has also come a long way in the last three years with their own switch quality control and offerings improving to where a Kailh-manufactured switch, as with these Agile switches here, is no longer a bad thing and often a new option for the end user to consider strongly. At $99, the Gram Spectrum TKL offers more than a lot of mainstream companies do, including thick PBT keycaps with doubleshot injected legends, hardware playback with five onboard profiles, and a pretty good software UI for further customization over key assignment and backlighting. I have also seen the keyboard go on sale, which makes it an even more attractive offering, but it is still worth a recommendation at MSRP, especially if you are looking for a clean, low-profile keyboard that should last for a while.