Just noticed a whole bunch of newly self-published Robert J. Sawyer backlist on Kobo. Some of these might have already been available from other publishers in US/Canada:
Golden Fleece (1990)
End of an Era (1994)
Starplex (1996)
Frameshift (1997)
Factoring Humanity (1998)
The Quintaglio Ascension:
1.
Far Seer (1992)
2.
Fossil Hunter (1993)
3.
Foreigner (1994)