Some of these numbers make no sense to me. So the $81 WGA+ fare below is a "sale" fare (discounted from $146), but the $55 Basic fare on same flights is not? It looks to me like the "real" WGA+ fares are $85 (not $146), and qualifies for a modest 5% discount, while $55 Basic fares do not. $85 and $55 are what DL is charging on this route for cheapest Main/BE fares. The DL upcharge for Refundable Main fares is a relatively modest $50 ($135) at this price point, while WN is not discounting it's Anytime fares at all at these prices.