The following are the only ones with affordable shipping to my country. They vary from being dirt cheap to relatively expensive:
50mm 24Ohm Headphone Speaker Unit Pure Copper DIY Audiophile Loudspeakers driver for Denon AH D9200|Earphone Accessories| - AliExpress
Excellent Sound New 50mm 32 Ohm Iron Cover Speaker Unit With Upgrade Diaphragm Audiophile Loudspeakers Driver For Diy Headphone - Protective Sleeve - AliExpress
40mm Headphone Speaker Driver 32ohm | 40mm Speaker Replacement | Headphone Parts 40mm - Protective Sleeve - Aliexpress
Excellent Hifi Sound New 40mm Speaker Unit For Diy Headphone Amazing Speaker Clear Sound Balance Sound - Earphone Accessories - AliExpress
40mm Carbon Paper Sound Driver Speakers Unit For Diy Headphones 10hz-80khz Superior Sound Quality Speaker Engineered By Onkyo - Earphone Accessories - AliExpress
Original Replacement 52mm Diy Speaker Unit For Akg N90 N90q Headphones - Earphone Accessories - AliExpress
I appreciate any and all help. Thank you!