@grislybutter a lot of information are available on line right at your fingertips. For example,
TAD Compact Reference One (TAD CR1TX)
https://www.technicalaudiodevices.com/compact-reference-one-tx/, where you could find general spec. and detailed driver tech aspects.
If specific speakers have been reviewed by credible sources such as Stereophile, you may find specifications and measurement information there.
To determine the regular sale price, you can search 'xxx for sale' on Google if the price is not listed on the official website. Some manufacturers do not list it, allowing dealers the flexibility to set their marketing sale prices. Prices can fluctuate over time, so pinpoint accuracy may not be necessary.
Dutch & Dutch 8c
https://dutchdutch.com/collections/8c-speaker. For this famous active speaker, the manufacture lists the sale price since it is a direct sale company. You could find other valuable information in Stereophile.
https://www.stereophile.com/content/dutch-dutch-8c-active-loudspeaker-system
If you need assistance, I will be more than happy to offer my time to provide additional information for your. Let me know.