If you cannot find an official free version of Singulier for your budget, several open-source Google Fonts offer a nearly identical "extra quality" look for absolutely zero cost, fully cleared for commercial use:
Because the official Typofonderie site is for commercial licensing, free personal-use versions are available on third-party font catalogs. Sites like , Fontke , and Zitidi offer verified OTF (OpenType) files. Singulier Font Extra Quality Free
[Insert license information, e.g., free for personal and commercial use] If you cannot find an official free version