Ann: LNGL Board Approves Re-Domicile and Listing in United States, page-138

LNGLF is nothing to do with LNG management and LNGLY is OTC so costs aren't comparable.

As for dual listing expenses once again you're talking rubbish:

"Among the drawbacks is that dual listing is expensive due to the costs involved in the initial listing and ongoing listing expenses. Differing regulatory and accounting standards may also necessitate the need for additional legal and finance staff. Dual listing could place more demands on management as well, given the additional time required to communicate with investors in the second jurisdiction through road shows, for example."

https://www.investopedia.com/terms/d/duallisting.asp

"Companies from developed economies derive no benefit from second listings in foreign equity markets. Those that still have them should reconsider."

https://www.mckinsey.com/business-functions/strategy-and-corporate-finance/our-insights/why-cross-listing-shares-doesnt-create-value