Amazon currently has some of the 2019 wave of LEGO Speed Champions sets on sale. This includes some of the more popular single cars like the Ferrari F40 and the Chevrolet Camaro ZL1. Also in stock is the fairly popular McLaren Senna which have been flying off the shelves at LEGO Stores or at least at my local one.
Ferrari F40 Competizione (75890) – $12.93/14% off
Chevrolet Camaro ZL1 Race Car (75891) – $12.93/14% off
McLaren Senna (75892) – $14.99
1967 Mini Cooper S Rally and 2018 Mini John Cooper Works Buggy (75894) – $39.99/20% off